Portable unmanned aerial vehicle jammer

Abstract

The utility model provides a portable unmanned aerial vehicle jammer which comprises a gun body, a power supply and a jamming system which are arranged in the gun body, and a countering antenna arranged at the front end in the gun body, the jamming system is in signal connection with the countering antenna, and the jamming system comprises a GPS signal deception unit and a remote control signal jamming unit; wherein the GPS signal deception unit comprises a main control chip, a GPS data simulator, an analog-to-digital converter, a radio frequency transceiver, a frequency mixer and a small signal amplifier which are connected in sequence; the small signal amplifier is in signal connection with the countering antenna; the remote control signal interference unit comprises a main control chip, a voltage-controlled oscillator and a power amplifier which are connected in sequence; and the power amplifier is in signal connection with the counter antenna. The unmanned aerial vehicle deception jamming device has a GPS signal deception jamming function and a remote control signal jamming function, can repel the unmanned aerial vehicle by emitting navigation deception signals, and can also cut off a control link between the unmanned aerial vehicle and a pilot by emitting broadband high-power suppression signals.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle interference, in particular to a portable unmanned aerial vehicle jammer. Background Art

[0002] Drones combine many features of traditional aircraft and mobile Internet, but the proliferation of drones has brought many security risks. Under the policy restrictions imposed by regulatory authorities on drones, anti-drone has become an urgent task to minimize the security risks caused by illegal drone intrusions. In areas where drones are easy to intrude and cause information leakage, or in sensitive areas that are prone to security risks, anti-drone equipment must be equipped to intercept and combat illegal intrusion drones in a timely manner to ensure regional safety.

[0003] A drone anti-gun is an electronic device that emits radio electromagnetic waves through an antenna to interfere with the flight control signals or GPS positioning signals of a suspicious drone. For example, in the prior art, a Chinese invention patent with publication number CN109141130A discloses a drone counter-gun, comprising: a gun body, the gun body is a shell structure, the sight is detachably arranged on the upper part of the gun body through a slide groove, the counter-antenna is arranged on the upper front end of the gun body, the display screen is a capacitive touch LCD screen, the main control circuit board is fixedly arranged at the rear end of the gun body, and the power supply is arranged at the lower front end of the gun body. The device of the present invention is small in size, light in weight, and can be operated by a single soldier. It has the characteristics of a firm body, good heat dissipation, convenient carrying and use, and long control distance; it has a built-in large-capacity battery, and it is rechargeable lithium with strong endurance. The drone counter-gun suppresses the wireless signal of the drone by transmitting a swept frequency single carrier, realizes gun management and personnel management through 4G, GPS, fingerprint, and background cloud platform, realizes parameter setting of human-computer interaction equipment through the user interface, and cloud storage and display of the counter-equipment status; the blocking frequency is accurate, the directional high-gain antenna is directional, the distance is long, and the aim is standard.

[0004] However, this type of drone anti-gun can only interfere with remote control signals, and its interference function is single, resulting in limited effect on drones in fixed flight. Utility Model Content

[0005] The purpose of the utility model is to provide a portable UAV jammer to solve the technical problems raised in the background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a portable UAV jammer, comprising a gun body, a power supply and a jamming system arranged in the gun body, and a counter-antenna arranged at the front end of the gun body, the jamming system is connected to the counter-antenna signal, and the jamming system comprises a GPS signal spoofing unit and a remote control signal jamming unit;

[0007] Among them, the GPS signal spoofing unit includes a main control chip, a GPS data emulator, an analog-to-digital converter, a radio frequency transceiver, a mixer, and a small signal amplifier connected in sequence; the small signal amplifier is signal-connected to the countermeasure antenna;

[0008] The GPS data emulator is used to generate a digital baseband signal of the GPS spoofing signal; the analog-to-digital converter is used to convert the digital baseband signal into an analog baseband signal; the radio frequency transceiver is used to modulate the analog baseband signal into an intermediate frequency signal with a frequency of 2.6 GHz; the mixer is used to convert the intermediate frequency signal into a mixed frequency signal with a carrier frequency of 1575.42 MHz; the small signal amplifier is used to amplify the mixed frequency signal;

[0009] The remote control signal interference unit includes a main control chip, a voltage-controlled oscillator, and a power amplifier connected in sequence; the power amplifier is signal-connected to the countermeasure antenna;

[0010] The voltage-controlled oscillator is used to generate a 2.4 GHz radio frequency interference signal; the power amplifier is used to amplify the power of the 2.4 GHz radio frequency interference signal.

[0011] Furthermore, the model of the GPS data emulator is CX2C64A; the model of the analog-to-digital converter is MAX5864; the model of the radio frequency transceiver is MAX2837; the model of the mixer is RFFC5072; the model of the small signal amplifier is MGA-81563.

[0012] Furthermore, the model of the voltage-controlled oscillator is KVCO-2400 voltage-controlled oscillator.

[0013] Furthermore, the power amplifier is a microwave power amplifier tube GTAH27045GX.

[0014] Furthermore, the model of the main control chip is LPC4320.

[0015] Furthermore, a keypad is further provided on one side inside the gun body, and a function switching button is provided on the keypad, and the function switching button is signal-connected to the main control chip.

[0016] Furthermore, the countermeasure antenna is a Yagi antenna.

[0017] Furthermore, the power supply is a lithium battery, and a charging interface for charging the lithium battery is provided at the tail end of the gun body.

[0018] The beneficial effects of the present utility model are embodied in:

[0019] The portable UAV jammer provided by the present utility model has a GPS signal spoofing interference function and a remote control signal interference function. It can not only drive away UAVs by transmitting navigation spoofing signals, but also cut off the control link between the UAV and the operator by transmitting broadband high-power suppression signals.

[0020] This portable UAV jammer is easy to carry, has a long working time, high cost performance, simple operation, and can counter a comprehensive range of UAV models, providing a feasible solution for the research of UAV countermeasures by various institutions. Brief Description of the Drawings

[0021] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0022] The drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with this application, and are used together with the specification to explain the principles of this application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of a portable UAV jammer provided by an embodiment of the present utility model;

[0024] Figure 2 It is a circuit diagram of the GPS signal spoofing unit provided by an embodiment of the present utility model;

[0025] Figure 3 It is a circuit diagram of the remote control signal interference unit provided by an embodiment of the present utility model;

[0026] The realization of the purpose of this application, functional features and advantages will be further described with reference to the embodiments and the drawings. Through the above drawings, the specific embodiments of this application have been shown, and there will be more detailed descriptions later. These drawings and text descriptions are not intended to limit the scope of the concept of this application in any way, but to explain the concept of this application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiments

[0027] The following will describe in detail the embodiments of the technical solutions of the present utility model with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, so they are only examples and cannot be used to limit the protection scope of the present utility model.

[0028] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application shall have the ordinary meanings understood by those skilled in the art to which this utility model belongs.

[0029] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this utility model.

[0030] In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of this utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0033] As Figure 1As shown in the figure, a portable UAV jammer provided by an embodiment of the present utility model includes a gun body 1, a power supply 2 and a jamming system 4 arranged in the gun body 1, and a countermeasure antenna 3 arranged at the front end in the gun body 1. The jamming system 4 is signal-connected to the countermeasure antenna 3. The jamming system 4 includes a GPS signal spoofing unit and a remote control signal jamming unit.

[0034] Among them, as Figure 2 shown, the GPS signal spoofing unit includes a main control chip, a GPS data emulator, an analog-to-digital converter, a radio frequency transceiver, a mixer and a small signal amplifier connected in sequence; the small signal amplifier is signal-connected to the countermeasure antenna 3.

[0035] The GPS data emulator is used to generate the digital baseband signal of the GPS spoofing signal; the analog-to-digital converter is used to convert the digital baseband signal into an analog baseband signal; the radio frequency transceiver is used to modulate the analog baseband signal into an intermediate frequency signal with a frequency of 2.6 GHz; the mixer is used to convert the intermediate frequency signal into a mixed frequency signal with a carrier frequency of 1575.42 MHz; the small signal amplifier is used to amplify the mixed frequency signal.

[0036] In this embodiment, the model of the GPS data emulator is CX2C64A; the model of the analog-to-digital converter is MAX5864; the model of the radio frequency transceiver is MAX2837; the model of the mixer is RFFC5072; the model of the small signal amplifier is MGA-81563, and the gain of the small signal amplifier is 12.4 dB.

[0037] For civil UAVs with navigation and positioning functions, no-fly zone information is designed in their map systems. According to the navigation system, if the UAV determines that it is in a no-fly zone: the UAV that has not taken off on the ground will refuse to take off; the UAV that has taken off will land automatically. Based on the above characteristics, the UAV jammer of the present application provides a navigation spoofing function: information such as the position of the no-fly zone is preset in the jamming system 4, and the UAV is directionally radiated and deceived with a pseudo-GPS signal. Since the GPS signal received by the UAV is weak, the UAV jammer only needs to output a navigation spoofing signal with a small power to achieve the effect of driving away the UAV.

[0038] The GPS data emulator can calculate data such as the spreading code phase, carrier phase, ionospheric delay, tropospheric delay, and Doppler frequency shift required for the system operation according to information such as the ephemeris file and preset position coordinates, and generate a pseudo-navigation message; the pseudo-navigation message sequence and the pseudo-random sequence C / A code are subjected to an "exclusive OR" operation to generate the digital data of the pseudo-GPS signal, and the data structure of the signal is the same as that of the real GPS data structure.

[0039] The power of the satellite GPS signal received by the drone is weak, about -128 dBm. When the system operates in the GPS spoofing mode, the power of the pseudo-GPS signal received by the drone only needs to be slightly greater than -128 dBm to complete GPS spoofing. The designed power of the pseudo-GPS signal received by this drone jammer is -125 dBm, and the effective countermeasure distance is 100 m.

[0040] As Figure 3 shown, the remote control signal interference unit includes a main control chip, a voltage-controlled oscillator, and a power amplifier connected in sequence; the power amplifier is signal-connected to the countermeasure antenna 3. The voltage-controlled oscillator is used to generate a 2.4 GHz radio frequency interference signal; the power amplifier is used to amplify the power of the 2.4 GHz radio frequency interference signal.

[0041] The frequency range of the remote control signal of civilian drones is 2.4 - 2.485 GHz, and the transmitted power within the frequency band does not exceed 1 W. Therefore, in this embodiment, the model of the voltage-controlled oscillator is the KVCO-2400 voltage-controlled oscillator. The principle of the KVCO-2400 voltage-controlled oscillator is that the input voltage controls the output frequency. When the control voltage at the input end is 0.1 - 4.0 V, the output frequency range is 2.28 - 2.68 GHz, meeting the requirement of generating a 2.4 GHz radio frequency interference signal. This module has low power consumption, low phase noise, and stable output.

[0042] Furthermore, the power amplifier is a microwave power amplifier tube GTAH27045GX, with an output power of 40 W for a 100 MHz broadband interference signal, a gain of 19 dB, and an efficiency of 51.3%.

[0043] In this embodiment, the model of the main control chip is LPC4320. And on one side inside the gun body 1, there is also a keypad 5 provided, and a function switching button 6 is arranged on the keypad 5. The function switching button 6 is signal-connected to the main control chip. The user sends a corresponding switching trigger signal to the main control chip by pressing the corresponding function switching button 6 to select and switch the interference mode.

[0044] In this embodiment, the countermeasure antenna 3 is a Yagi antenna. This type of antenna has a simple structure, high gain, and small standing wave. It can be horizontally or vertically polarized and is widely used in the fields of direction finding and long-distance communication.

[0045] In this embodiment, the power supply 2 uses a lithium battery for power supply. A charging interface 7 for charging the lithium battery is arranged at the tail end of the gun body 1.

[0046] To sum up, the portable drone jammer provided by the present utility model has a GPS signal spoofing interference function and a remote control signal interference function. It can not only drive away the drone by transmitting navigation spoofing signals, but also cut off the control link between the drone and the flyer by transmitting broadband high-power suppression signals.

[0047] This portable UAV jammer is convenient to carry, has a long working time, high cost performance, simple operation, and can counter a comprehensive range of UAV models, providing a feasible solution for the research on UAV countermeasures by various institutions.

[0048] Finally, it should be noted that the technical features of the technical solution of this application can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered that it is within the scope recorded in this application.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. A portable UAV jammer, comprising a gun body (1), a power supply (2) and a jamming system (4) arranged in the gun body (1), and a countermeasure antenna (3) arranged at the front end in the gun body (1), wherein the jamming system (4) is signal-connected to the countermeasure antenna (3), and is characterized in that: The interference system (4) includes a GPS signal spoofing unit and a remote control signal interference unit; Among them, the GPS signal spoofing unit includes a main control chip, a GPS data emulator, an analog-to-digital converter, a radio frequency transceiver, a mixer, and a small signal amplifier connected in sequence; the small signal amplifier is signal-connected to the countermeasure antenna (3); The GPS data emulator is used to generate a digital baseband signal of a GPS spoofing signal; the analog-to-digital converter is used to convert the digital baseband signal into an analog baseband signal; the radio frequency transceiver is used to modulate the analog baseband signal into an intermediate frequency signal with a frequency of 2.6 GHz; the mixer is used to convert the intermediate frequency signal into a mixed frequency signal with a carrier frequency of 1575.42 MHz; the small signal amplifier is used to amplify the mixed frequency signal; The remote control signal interference unit includes a main control chip, a voltage-controlled oscillator, and a power amplifier connected in sequence; the power amplifier is signal-connected to the countermeasure antenna (3); The voltage-controlled oscillator is used to generate a 2.4 GHz radio frequency interference signal; the power amplifier is used to amplify the power of the 2.4 GHz radio frequency interference signal.

2. The portable UAV jammer according to claim 1, characterized in that, The model of the GPS data emulator is CX2C64A; the model of the analog-to-digital converter is MAX5864; the model of the radio frequency transceiver is MAX2837; the model of the mixer is RFFC5072; the model of the small signal amplifier is MGA-81563.

3. The portable UAV jammer according to claim 1, wherein The model of the voltage-controlled oscillator is KVCO-2400 voltage-controlled oscillator.

4. The portable UAV jammer according to claim 1, characterized in that The power amplifier is a microwave power amplifier tube GTAH27045GX.

5. A portable UAV jammer according to any one of claims 1-4, characterized in that, The model of the main control chip is LPC4320.

6. The portable UAV jammer according to claim 1, characterized in that, On one side inside the gun body (1), a keypad (5) is further provided, and a function switching button (6) is arranged on the keypad (5), and the function switching button (6) is signal-connected to the main control chip.

7. A portable UAV jammer according to claim 1, characterized in that, The countermeasure antenna (3) is a Yagi antenna.

8. The portable UAV jammer according to claim 1, characterized in that, The power supply (2) is a lithium battery, and a charging interface (7) for charging the lithium battery is arranged at the tail end of the gun body (1).

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